Key telephone set



FIG. 1 is a front view of a key telephone set showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a perspective view with the hand-set removed from the cradle and inverted to reveal the underside thereof.

The fragmentary and/or abbreviated showing of cord in the figures is for ease and facility of illustration. 

The ornamental design for a key telephone set, substantially as shown and described. 